O_TEXTBLOCK_TEXT Even though the <HL Topic=Weight.tpc>WEIGHT</HL> of each of these objects changes according to the planet they are on, the mass remains the same. An object has a constant amount of mass, regardless of its location.
E_QUEST1 What is the difference between an astronaut's weight and her mass on the moon?
E_QUEST2 What has greater mass, a piano or a telephone? How do you know?
E_QUEST3 What has more mass, a pound of feathers or a pound of lead?
D_TEXTBLOCK_TEXT All materials possess mass, which is the actual amount of matter in an object. An object has the same amount of mass whether it is on the earth's surface, or out floating in space, even though its <HL Topic=Weight.tpc>WEIGHT</HL> changes. The greater an object's mass, the greater its <HL Topic=Inertia.tpc>INERTIA</HL>, or <HL Topic=Resistance.tpc>RESISTANCE</HL> to <HL Topic=Motion.tpc>MOTION</HL>.
